Mark Esser vs. Charles Witherow — Career Comparison

On the career pitching numbers, Mark Esser posted a stronger line than Charles Witherow. Mark Esser posted stronger numbers in ERA (16.2 vs 18) and WHIP (3.600 vs 4.000). By the career numbers, Mark Esser had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.